J86 NEOTOMA. 



Genl. Char. "Externally similar to N. i. albigula, but averaging 

 rather larger, with a shorter and broader skull and much heavier 

 dentition." (Allen, 1. c.) 



Measurements. Total length, 356; tail vertebras, 159; hind foot, 

 32; ear from notch, 30. Skull: total length, 45; Hensel, 38; length, 

 of nasals, 18; zygomatic width, 24; width of braincase above zygo- 

 mata, 18.5; mastoid width, 18; interorbital constriction, 6; length of 

 upper tooth row, 9. 



290. orizabae (Neotoma), Merr., Proc. Biol. Soc. Wash., ix, 1894, 



p. 122. 



ORIZABA WOOD RAT. 



Type locality. Mt. Orizaba, State of Puebla, Mexico. 



Geogr. Distr. States of Puebla, Tlaxcala and Vera Cruz, Mexico. 



Genl. Char. Similar to N. julvienter, but more buffy ochraceous 

 above, and white on belly; feet shorter. 



Color. Above ochraceous buff, mixed with black on back; head 

 grayish; under parts, hands, and feet white; on each side of breast 

 a spot of salmon color; tail above dusky, beneath whitish. 



Measurements. Total length, 356; tail vertebra?, 163 ; hind foot, 33. 



291. tenuicauda (Neotoma), Merr., Proc. Biol. Soc. Wash., vn, 1892, 



p. 169. 

 SLENDER-TAILED WOOD RAT. 



Type locality. North slope of the Sierra Nevada de Colima, State 

 of Colima, Mexico. Altitude, 12,000 feet. 



Geogr. Distr. State of Colima, Mexico. 



Genl. Char. Size small ; tail and ears almost naked. 



Color. Above dark brown, tinged with yellowish fulvous; darker 

 on flanks; under parts whitish; salmon color at arm pits; hands and 

 feet whitish; tail above dusky, beneath whitish. 



Measurements. Total length, 340; tail vertebrae, 160; hind foot, 31. 



bella felipensis Elliot, Pub. Field Columb. Mus., 1903, in, p. 217. 



Zoology. 

 SAN FELIPE DESERT RAT. 



Type locality. San Felipe, Gulf of California, Lower California, 

 Mexico. 



Genl. Char. Largest of the pale colored desert rats, nearest to 

 N. bella ; feet and ears larger ; tail longer. Skull with shorter and 

 broader nasals, shorter pterygoid fossa, wider basioccipital and basi- 

 sphenoid; bullae much smaller; braincase narrower posteriorly. 



Color. Upper parts cream buff, lined with black; sides cream 

 color; lips, hands, feet, lower portion of sides, and under parts pure 

 white; basal part of hairs on side and under parts plumbeous, except 



